Diodes has been granted a patent for a switched mode power supply (SMPS) that features a dual-switch configuration, an adaptive minimum duty-cycle circuit, and a pulse-width modulation (PWM) control system. This design enhances output voltage regulation by adjusting the oscillating frequency based on an error voltage signal. GlobalData’s report on Diodes gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Diodes, Authentication communication protocols was a key innovation area identified from patents. Diodes's grant share as of June 2024 was 68%. Grant share is based on the ratio of number of grants to total number of patents.
Switched mode power supply with adaptive duty-cycle control
The granted patent US12027980B2 describes a switched mode power supply (SMPS) that incorporates a sophisticated control mechanism to regulate output voltage effectively. The SMPS features an input node for voltage coupling, an output node for delivering output voltage, and two switches that manage the flow of current through an inductor. The system employs an error amplifier to compare the sampled output voltage with a reference voltage, generating an error voltage signal. This signal is processed by an adaptive minimum duty-cycle circuit, which adjusts the current signal sent to an oscillator circuit. The oscillator produces a clock signal with a frequency that varies based on the error voltage, facilitating precise control over the switching operations of the power switches.
Additionally, the patent outlines the structure of the adaptive minimum duty-cycle circuit, which includes PMOS and NMOS transistors, a resistor, and a current mirror. This circuit is designed to ensure that the minimum on-time condition is met before enabling the current signal to the oscillator. The PWM switching control circuit further refines the operation by generating a switching control signal based on the error voltage and clock signal. The SMPS is configured to operate as a buck converter, and the design includes provisions for voltage sensing and error amplification to maintain stable output under varying load conditions. Overall, the patent presents a comprehensive approach to enhancing the efficiency and reliability of switched mode power supplies.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
